Note: Crystal Disk Mark 3.0 is not available to the public yet, but the Technical Preview does allow us to test 4K performance at queue depths of 4 and 32 in addition to 1. The current release Crystal Disk Mark only shows us QD 1.

In CDM we are looking at 4k performance. The standard Team SandForce drives running all sixteen flash chips have all given us really good 4k read speeds that go all the way up to 230 MB/s at a queue depth of 32. The reduced flash Phoenix Pro is only able to hit 94.4 MB/s at the same queue depth.

At a single command the Phoenix Pro 40GB reads around 20 MB/s, but the full size drives achieve close to 30 MB/s, so there is some performance loss between the sixteen flash drives and the twelve flash units that are coming out now.

When it comes to write speeds, we see massive reductions in performance at the 4k level. At a single command we see close to 30 MB/s loss and that number only goes higher as the command length increases.

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